Fan mechanism.



No. 780,740. 7 Y PATENTED JAN 24, 1905.

' S. R.-BAGHTEL.

FAN MECHANISM.

APPLIOATIOKIILED OUT. 23, 1902.

WITNESSES INVENTOI? I ;u A ro? 54 APPLICATION FILED OOT. 23,1902.

. PATENTED JAN. 24, 1905. s. R. BAGHTEL'.

FAN MECHANISM.

. 2 SEBETB 8HEBT 2.

- m VIENTOI? ATTORNEY UNITED STATES Patented January 24, 1905.

PATENT OFFICE.

SAMUEL R. BAGHTEL, OF LAFAYETTE, INDIANA, ASSIGNOR TO THOMAS DUNCAN, OFLAFAYETTE, INDIANA.

FAN MECHANISM.

SPECIFICATION forming part of Letters Patent No. 780,740, dated January24,. 1905.

Application filed October 23, 1902. Serial No. 128.388-

To a whom it may concern.-

Be it known that I, SAMUEL R. BACHTEL, a citizen of the United States,residing at Lafayette, in the county of Tippecanoe and State of Indiana,have invented a certain new and useful Improvement in Fan Mechanism,(Case No. 2,) of which the following is afull, clear, concise, and exactdescription, reference being had to the accompanying drawings, forming apart of this .specification.

My invention relates to fan-motors, and has for its object the provisionof animproved construction thereof enabling, the employment of a primemover for the fanthat may have a stationary support, there beingassociated with such a prime mover mechanism that will permit a bodilyrotation of the fan, with its bearing, so that currents of air may beoccasioned through a desirable range, the structure enabling thecomplete bodily revolution of the fan, with its bearing, or a revolutionthereof through a limitedangle of reciprocal directions. Inconstructions hitherto in use the prime mover has been rotatable as anentirety, necessitating considerable expense in construction andnecessarily imposing large weight upon the bearing supporting theprimemover, which bearing in. order to overcome friction included ballsor rollers. By means of my invention the only weight upon the bearingcarrying the bodily-movable fan-support is the weight of the fan and itssupport.

This bearing is preferably rotatable upon the stationary casing of theprimemover. The fan is provided with a bearing that defines its axis ofrotation, which fan-bearing is so angularly related to thesupporting-bearing for the fan structure as to enable the fan in itsreaction upon the air to effect the bodily movement of itself and itsbearing about the axis of the main supporting-bearing. In order that thefan may be oscillated in its bodily movement, automatic meansareprovided for oscillating the position of the fans axis of rotation, sothat its direction with respect to the axis of the supporting-bearingmay be periodically changed to enable the fan, with its hearings, tobodily reciprocate. As the preferred means for accomplishing this resultI employ a bear1ngsleeveha\ '1ng a bore d1agoment with the saidbearing-sleeve.

nally disposed and provide for this bearingsleeve a second bearing,within which the sleeve is rotatable. The means that permit theoscillation of the fans axis are associated with the sleeve or hearingthat defines the fans axis of rotation and serve to intermittentlyarrest the rotation of the sleeve, which otherwise is permitted by thefriction between the fan-shaft and the bearing-sleeve. The device forthus intermittently arresting the ro- 6 tation of said bearing-sleevepreferably comprises an escapement-pawl having two arms adapted to bealternately engaged by the bear ing-sleeve and a third arm interposedbetween two lugs, which lugs by alternately engaging 5 the third armserve to effect the oscillation of the escapement to alternately bringone or the other of the first two arms into engage- The axis of the fanis thus periodically shifted, so that 7 the fan, with its support, isbodily moved in reciprocal directions by the action of the fan in theair. These lugs are preferably relatively adjustable, so that the rangeof the an gular movement of the fan may be regulated. The lugs beingalso preferably movable are displaceable from the path of thearm of theescapement that may be interposed between the same, whereby completebodily rotation of the fan, with its support, may be effected. Theconnection between the motive element of the prime mover and the fan maybe had bymeansofafiexibleshaft. Theprimemover that is well, adapted forthe operation of the fan is an electric motor, and there may be 5provided in the motor-casing starting and regulating switchingapparatus.

There are features of my invention that are adaptable for fan-motorshaving prime movers notstationarily mounted. 9

I will explain my invention more fully by reference to the accompanyingdrawings, in which Figure 1 illustrates, partially in section andpartially in elevation, the preferred form of my invention. Fig. 2 is aplan view of the structure shown in Fig. 1.

Like characters of reference indicate similar parts throughout bothfigures.

In the embodiment of the invention shown I00 the casing a of the primemover is vertically disposed and the rotative element Z) of the primemover has its axis vertically arranged within the casing. The particularform of prime mover shown is an electric motor, and the field-coils 0thereof are supported by the casing, while the armature 6 is mountedupon a shaft (Z, journaled in upper and lower bearings supported by thecasing. The casing a is preferably made in sections united by thestudbolts 6, while the bottom of the casing is made hollow toaccommodate the usual rheostat f, with its controlling-switch g, thecommutator-brushes in connection with this rheostat being preferablydisposed at the lower end of the armature, so that connections mayreadily be made therewith. The upper end or top of the casing ispreferably provided with an annular rim it, that is preferably centrallyarranged with respect to the axis of rotation of the armature and withinwhich is disposed the rotating supportt', that is prevented fromvertical displacement by means of a washer is, that engages the upperrim portion of the rotating support i. The rotating support a, beingsomewhat in the nature of a ring, preferably, atits base, is permittedto rotate about an axis that is substantially coincident with the axisof rotation of the armature, as preferred. In this way the casing of themotor may be maintained stationary, while the bodily movement of thefan-support 2' may readily be eifected in a preferred way, more fully tobe set forth. The bracket Z forms a continuation of the portion 2' andterminates at its upper end in a hub or bearing m, within which bearingis disposed the fans hearing a. The fan is provided with a shaft 0, thatis preferably rigid at its ends where it is in driving engagement withthe fan and the prime mover and has an intermediate section 12, which isflexible, so that the axis of the fan and the rotating element of theprime mover may desirably be displaced. In the device of my presentinvention, however, the relation of the axis of the rotating element ofthe prime mover and the fan are only regulated by convenience inconstruction, as will be obvious by inspection of the drawings. Byadopting the relative association of parts illustrated, however, a verysimple and compact structure is assured. The bearing a, that defines thefans axis of rotation, is preferably horizontal and is so disposed withreference to the axis of rotation of the base i as to enable thefan-blades by their reaction upon the airto effect a bodily movement ofthe fans support 2' Z about the axis of the element Z). Where it isdesired to effect reciprocal movements of the fan with its support, Iprovide a means for oscillating the position of the fans axis ofretation, and in order to enable the said means to very eflectivelyoperate I provide the sleeve a with a diagonal bore, so that the axis ofthis bore is displaced with respect to the outer bearing or hub m. Thepositionof the axis of the bore of sleeve '22. is changeable withrespect to the hub m and the axis of rotation of the base 7 By reason ofthe friction between the sleevea and the fans shaft there is a constant;tendency on the part of the fan-shaft to rotate said sleeve. Mechanismis provided which intermittentl y arrests the rotation of the sleeve92., which mechanism is preferably in the form of a rotatably-mountedescapement I provided with arms 9, adapted to be alternately placedwithin the path of a lug a, mounted upon the sleeve 02., preferably byhaving a n utintegrally formed therewith that has threaded engagementwith the sleeve 12, which nut also takes part in preventing longitudinaldisplacement between the bearings '22. and m. On the opposite side ofthe pivot of the pawl or escapement q there is provided a single arm t,that is interposed between the lugs 11. a, that are stationarilymounted, preferably by being clamped, upon the projection of the casinga, being desirably secured upon the upper bearing of the armature-shaft..As the fan, with its support, is bodily moved the arm 2? is alternatelyengaged by lugs 11. a to effect the withdrawal of one of the arms 1 fromthe path of the lug s and the location of the other arm within the pathof this lug, the arms 9 9' being alternately placed within and withdrawn from the path of the said lug a. Thus the sle ve 1? isintermittently permitted to rotate within the bearing on, and althoughsuch rotation of the sleeve 12 is in a uniform direction the position ofthe axis of rotation of the fan is oscillated with respect to the axisof rotation of the base 11 and with respect to the bearing a. A threadednut r serves to clamp the lug 1/. in position, these lugs being relatively adjustable to vary the space between the same and being prefcrably slotted at their bases to enable their complete removal.

The bracket Z is preferably formed in relatively movable sections linkedat w, a clamping-nut a being employed for securing the relativepositions in which the sections of the bracket may be disposed. In thisway the axis of rotation of the fan maybe inclined with respect to thehorizontal, if desired.

It is obvious that changes may be made in the construction withoutdeparting from the spirit of my invention.

Having thus described my invention, lclaim as new and desire to secureby Letters Patent 1. The combination with a rotatable fan, of a bearingtherefor, permitting the bodily rotation of the fan, the axes of the fanand hearing being angularly related to enable the fan by striking theair to effect such bodily rotation, and a stationarily-moiinted primemover having driving connection with the fan, substantially asdescribed.

2. The combination with a rotatable fan, of a bearing therefor,permitting the bodily rotation of the fan, automatic means for changingthe adjustment of the fans axis with re-' a bearing therefor, permittingthe bodily rotation of the fan, a bearing defining the fans axis ofrotation, automatic means for oscillating the position of the saidbearing, and a stationarily-mounted prime mover in driving engagementwith the fan, substantially as described.

4. The combination with a fan, of a shaft therefor, a bearing-sleevehaving a bore diagonally disposed within the same, and a sec- 0ndbearing within which the first bearing is rotated, whereby bodilyrotation of the fan and said first-mentioned hearing may be effected,substantially as described.

5. The combinationwith a fan, of a shaft therefor, a bearing-sleevehaving a bore diagonally disposed within the same, a second bearingwithin which the first bearing is rotated, and a prime mover in drivingconnection with the fan, whereby bodily rotation of the fan and saidfirst-mentioned bearing may be effected, substantially as described.

6. The combination with a rotatable fan, of

g a shaft therefor, a bearing-sleeve having a bore diagonally disposedWithin the same,-a second hearing within which the-first bearingis'rotated, automatic means for periodically preventing rotation betweensa1d bear1ngs,'

whereby rotation of thefan and said firstmentioned bearing may beeffected, substantially as'described.

7. The combination with a rotatable fan, of a shaft therefor, abearing-sleeve having a bore diagonally disposed within the same, asecond bearing within which the first bearing is rotated said secondbearing being mounted for bodily rotation, at prime mover in drivingconnection with the fan, and automatic means for periodically preventingrotation between said bearings, whereby bodily rotation of the fan andsaid first-mentioned bearing may be effected alternately in oppositedirections, substantially as described.

8. The combination with a rotatable fan, of a shaft therefor, abearing-sleeve having .a bore diagonally disposed within the same, asecond bearing within which the first bearing is rotated, and arotatable mounting for the fan and the aforesaid bearings, providing anaxis of rotation angularly related to the axes of the aforesaidbearings, substantially as described.

9. The combination with a rotatable fan, of a shaft therefor, abearing-sleeve having a bore diagonally disposed within the same, asecond bearing within which the first bearing is rotated, a prime moverin driving connection with the fan, and a rotatable mounting for the fanand the aforesaid. bearings, providing an axis of rotation angularlyrelated to the axes of the aforesaid bearings, substantially asdescribed.

10. The combination with a rotatable fan, of a shaft therefor, abearing-sleeve having a bore diagonally disposed within the same, asecond bearing within which the first bearingis rotated, automatic meansfor periodically 1 preventing rotation between said bearings, and arotatable mounting for the fan and the aforesaid bearings, providing anaxis of rotation angularly related to the axes of the aforesaidbearings, substantially as described.

11. The combination with a rotatable fan, of a shaft therefor, abearing-sleeve having a bore diagonally disposed within the same, asecond bearing within which the first bearing is rotated, a prime moverin driving connection with the fan, automatic means for periodicallypreventing rotation between the said bearings, and a rotatable mountingfor the fan and the aforesaid bearings, providing an axis of rotationangularly related to the axes of the aforesaid bearings, substantiallyas described.

12. The combination with a prime mover disposed within a stationarycasing, of arotatable mounting upon said casing and a fan supported bythe rotatable mounting and in driving connection with said prime moverand having its axis so angularly disposed withrespect to the axis of therotatable mounting as to enable the fan to effect its own bodilyrotation upon its support, substantially as described.

13. The combination with a prime mover disposed within a stationarycasing, of a rotatable mounting upon said casing, a fan supported by therotatable mounting and in driving connection with said prime mover andhaving its axis so angularly disposed with respect to the axis of therotatable mounting as to enable the fan,

to effect its own bodily rotation upon its support, and automatic meansfor oscillating the position of the fans axis with respect to itsrotatable mounting to effect a bodily oscillating movement of the fan,substantially as described.

14:. The combination with a prime mover disposed within a stationarycasing, of a rotatable mounting upon said casing, a fan supported by therotatable mounting and in driving connection with said prime mover andhaving its axis so angularly disposed with respect to the axis of therotatable mounting as to enable the fan to efiect its own bodilyrotation upon its support, and adjusting means interposed between thefan and its rotatable mounting, permitting the vertical adjustment ofthe fan, substantially as described.

15. The combination with a prime mover dis posed within a stationarycasing, of a rotatable mounting upon said casing, a fan supported by therotatable mounting and in driving connectlon with said prime mover andhaving 1ts axis IIO.

so angularly disposed with respect to the axis of the rotatable mountingas to enable the fan to efiect its own bodily rotation upon its support,a bearing for that hearing defining the fans axis of rotation, anoscillated eseapement provided with two arms upon one side alternatelyengaged by the bearing that defines the fans axis of rotation and uponthe other side having one arm, and lugs between which the latter arm isdisposed, and alternately engaged thereby, substantially as described."

16. The combination with a prime mover disposed within a stationaryeasing, of a rotatable mounting upon said casing, a fan supported by therotatable mounting and in driving connection with said prime mover andhaving its axis so angularly disposed with respect to the axis of therotatable mounting as to enable the fan to efiect its own bodilyrotation upon its support, a bearing for that bearing defining the fansaxis of rotation, an oscillating escapement provided with two arms uponone side alternately engaged by the bearing that defines the fans axisof rotation and upon the other side having one arm, and adjustable lugsbetween which the latter arm is disposed, and alternately engagedthereby, substantially as described.

17. The combination with a fan, of a prime mover for operating the fan,a bracket formed in relatively movable sections mounted on the primemovers casing, a flexible shaft interposed between the fan and the primemover, and means for automatically changing the axis of rotation of saidfan, substantially as described.

In witness whereof I hereunto subscribe my name this 8th day of October,A. D. 1902.

SAMUEL R. BAGHTEL.

Witnesses:

GRANT BELTZ, CHARLES JONES.

